RECON: TNO occultation with 03TJ58

Event between 03TJ58 and star GA1120:02497763 with event index number of 2004741

Geocentric closest approach at 2026/02/27 05:34:01 UTC

J2000 position of star is 06:51:41.2 +23:47:35
Equinox of date position of star is 06:53:08.3 +23:45:46
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 4 degrees from the moon. Moon is 79% illuminated.
Apparent brightness V=23.7

[RECON map]
Object is 41.9 AU from the Sun and 41.4 AU from the Earth.
Apparent velocity is 12.2 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 712 seconds.
The 1-sigma cross-track error in the shadow position is 2843 km.
The sky-plane scale is 30013.4 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 16.0 sec chord
Diameter=79.6 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03TJ58, (2026/02/27 05:34UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:55.0 +27:57:39  1.1 12.77   9
Alhena         06:39:13.4 +16:22:29  1.9  8.09  12
37 Gem         06:56:55.1 +25:20:26  6.3  1.78   3
PPM 096653     06:53:35.2 +23:34:06  6.9  0.20   4
03TJ58         06:53:16.6 +23:45:36 14.8         4
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 1.3 sigma about the mid-time.
The median site spacing is 33.7 km RECON observability=1.0 and success probability=19.5%

Site	Site mid-time (UT)	Sun alt (deg)	Sky	Moon	Star alt (deg)	Star az (deg)	Target	Observing Time (UT)	X-track (km)
Sleaford	05:31:35	-41.3	Dark	Up	53.1	232.0	Up	05:16:35 - 05:46:35	-1211
Kamloops	05:32:43	-36.2	Dark	Up	60.1	212.4	Up	05:17:43 - 05:47:43	-1558
Kelowna	05:32:36	-37.1	Dark	Up	60.5	214.6	Up	05:17:36 - 05:47:36	-1625
Peachland	05:32:38	-37.0	Dark	Up	60.6	214.2	Up	05:17:38 - 05:47:38	-1640
Summerland	05:32:36	-37.1	Dark	Up	60.7	214.5	Up	05:17:36 - 05:47:36	-1653
Penticton	05:32:36	-37.2	Dark	Up	60.8	214.8	Up	05:17:36 - 05:47:36	-1658
Oliver	05:32:35	-37.5	Dark	Up	61.0	215.2	Up	05:17:35 - 05:47:35	-1692
Anarchist Mountain Observatory	05:32:34	-37.7	Dark	Up	61.1	215.7	Up	05:17:34 - 05:47:34	-1706
Okanogan	05:32:33	-37.9	Dark	Up	61.7	216.0	Up	05:17:33 - 05:47:33	-1772
Brewster	05:32:33	-38.0	Dark	Up	62.0	215.9	Up	05:17:33 - 05:47:33	-1802
Victoria	05:32:55	-35.8	Dark	Up	62.9	209.0	Up	05:17:55 - 05:47:55	-1804
Manson/Chelan	05:32:35	-37.9	Dark	Up	62.3	215.5	Up	05:17:35 - 05:47:35	-1827
Wenatchee	05:32:35	-38.1	Dark	Up	62.8	215.7	Up	05:17:35 - 05:47:35	-1876
Ellensburg	05:32:35	-38.2	Dark	Up	63.2	215.8	Up	05:17:35 - 05:47:35	-1920
Yakima	05:32:35	-38.4	Dark	Up	63.5	216.2	Up	05:17:35 - 05:47:35	-1961
Toppenish/White Swan	05:32:32	-38.6	Dark	Up	63.7	216.8	Up	05:17:32 - 05:47:32	-1980
PNWRO	05:32:23	-39.7	Dark	Up	63.3	219.9	Up	05:17:23 - 05:47:23	-1996
The Dalles	05:32:36	-38.6	Dark	Up	64.6	216.3	Up	05:17:36 - 05:47:36	-2068
Maupin	05:32:34	-38.9	Dark	Up	64.9	217.0	Up	05:17:34 - 05:47:34	-2109
Sisters	05:32:35	-39.1	Dark	Up	65.8	217.2	Up	05:17:35 - 05:47:35	-2204
Bend	05:32:33	-39.4	Dark	Up	65.9	218.0	Up	05:17:33 - 05:47:33	-2225
Oregon Observatory	05:32:33	-39.4	Dark	Up	66.1	218.0	Up	05:17:33 - 05:47:33	-2244
Dunrhomin	05:30:47	-50.8	Dark	Up	58.8	247.9	Up	05:15:47 - 05:45:47	-2326
Nikitin	05:30:47	-50.9	Dark	Up	58.8	248.1	Up	05:15:47 - 05:45:47	-2345
CU-SBO	05:30:46	-50.9	Dark	Up	58.9	248.2	Up	05:15:46 - 05:45:46	-2353
Chiloquin	05:32:34	-39.8	Dark	Up	67.3	219.1	Up	05:17:34 - 05:47:34	-2385
Klamath Falls	05:32:33	-40.0	Dark	Up	67.5	219.8	Up	05:17:33 - 05:47:33	-2419
Cedarville	05:32:21	-41.4	Dark	Up	67.3	224.0	Up	05:17:21 - 05:47:21	-2468
Fall River/Burney	05:32:27	-40.9	Dark	Up	68.2	222.4	Up	05:17:27 - 05:47:27	-2535
Gimple	05:32:23	-41.7	Dark	Up	68.6	225.1	Up	05:17:23 - 05:47:23	-2622
Greenville	05:32:23	-41.6	Dark	Up	68.7	224.9	Up	05:17:23 - 05:47:23	-2623
Quincy	05:32:22	-41.7	Dark	Up	68.8	225.3	Up	05:17:22 - 05:47:22	-2644
Portola	05:32:19	-42.1	Dark	Up	68.6	226.4	Up	05:17:19 - 05:47:19	-2651
Reno	05:32:14	-42.6	Dark	Up	68.5	228.2	Up	05:17:14 - 05:47:14	-2669
Carson City	05:32:13	-42.8	Dark	Up	68.7	228.9	Up	05:17:13 - 05:47:13	-2706
Yerington	05:32:09	-43.3	Dark	Up	68.5	230.4	Up	05:17:09 - 05:47:09	-2717
Gardnerville	05:32:12	-43.0	Dark	Up	68.8	229.4	Up	05:17:12 - 05:47:12	-2731
Hawthorne	05:32:04	-43.9	Dark	Up	68.4	232.3	Up	05:17:04 - 05:47:04	-2757
Lee Vining	05:32:07	-43.9	Dark	Up	69.1	232.6	Up	05:17:07 - 05:47:07	-2824
Bishop	05:32:00	-44.7	Dark	Up	69.0	235.1	Up	05:17:00 - 05:47:00	-2875
Beatty	05:31:49	-46.0	Dark	Up	68.2	238.8	Up	05:16:49 - 05:46:49	-2897
Patrick	05:31:26	-48.7	Dark	Up	66.9	246.2	Up	05:16:26 - 05:46:26	-3001
Laughlin/Bullhead City	05:31:30	-48.3	Dark	Up	67.5	245.8	Up	05:16:30 - 05:46:30	-3040
Lake Havasu City	05:31:27	-48.9	Dark	Up	67.6	247.6	Up	05:16:27 - 05:46:27	-3107
George/Scottsdale	05:31:08	-50.9	Dark	Up	66.0	252.2	Up	05:16:08 - 05:46:08	-3140
Wildwood	05:31:55	-46.0	Dark	Up	70.8	242.4	Up	05:16:55 - 05:46:55	-3225
Idyllwild	05:31:41	-47.6	Dark	Up	69.6	246.1	Up	05:16:41 - 05:46:41	-3231
Calipatria	05:31:32	-48.7	Dark	Up	69.0	249.2	Up	05:16:32 - 05:46:32	-3274
Yuma	05:31:25	-49.5	Dark	Up	68.4	251.4	Up	05:16:25 - 05:46:25	-3304

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 03TJ58, (2026/02/27 05:34UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 12.77   9
Alhena         06:37:42.8 +16:23:57  1.9  8.09  12
37 Gem         06:55:18.6 +25:22:33  6.3  1.78   3
PPM 096653     06:51:59.9 +23:36:06  6.9  0.20   4
03TJ58         06:51:41.2 +23:47:35 14.8         4
Positions are for J2000

Event circumstances last updated at 2023/11/17 04:54:16 UT

RECON